The Mongol invasion of Russia — the invasion of the Mongol Empire on the territory of the Russian principalities in 1237-1240 years during the Western campaign of the Mongols (Kipchak campaign) 1236-1242, under the leadership of the chingisid Batu Khan and Subutai <span>of the warlord.
</span>So, answer : <span>Batu Khan</span>
<span>The difference between the number of live births and the number of deaths during the year. When the number of births exceed the number of deaths.</span><span />
The Lincoln monument has 36 pillars because at the time of Lincoln's assassination, there were 36 states in the Union.
The United States became more deeply involved in Vietnam in the late 1960s.
